Ty sputtering under throttle and boost

[Boosted]

1992 TY 145K
Truck ran. Fuel pump died. Lines were trashed. New tank, sump kit, inline pump, filter, and lines. New sending unit in tank.

Truck ran for a week. Started to develop a miss. No changes were made. Sputtering and hiccuping under load. New NGK's. New Taylors. New Conrad Cap and Rotor. New MSD coil. Backfiring. New vacuum lines all the way around. Checked all electrical connections. Zach Mann and Daenan Graham come over and check time (good) and find firing order off and rotor on wrong.

Truck runs. Still hiccups and sputters under throttle. Datamaster shows O2 voltage would drop to nothing. New Bosch O2 sensor. Truck feels ready and is producing better torque at part throttle situations. STILL hiccup and sputter under load. Whats next?

Map sensor? Tried. All local parts stores have 3 female openings but the little ridges to make sure you are putting it on right direction don't match.
Anyone have a spare 2 bar maps sensor?
Throttle postition sensor? Havent tried yet...could it be a problem?
Wastegate Solenoid? Havent tried. Will order Monday to ruel out the problem.
Ignition Module?? Could it behave like this? No changes were made before it started to hiccup.

I want so bad to love this thing but I need to get more than one week of driving between repairs.

Ideas?

 

[ZMann]

Zach, dont worry, I am moving out of the city within a month! I will look to see if I have a 2 bar MAP sensor laying around.

We'll meet up sometime to hook up datamaster again.

 

[Mad Mike]

Has the coil, or ignition module been checked or replaced? Sounds like ignition.

 

[justin949]

i had the same problem i put in new ngk ur6'S and taylor wires check the ohm'S in the wires good luck

 

[Boosted]

Dont worry Zach....I am just kiddin'
Too Ironic for me....


Coil is new MSD.
Ignition module will be checked tomorrow.

I will test ohms on wires. They are a month old. Souldn't be bad but I will check them anyways.

 

[DanenGraham]

I can mail you my two bar, if you want, FREE.

 

[leroy]

Boosted,

Can you hook up a fuel pressure gauge and watch it while you are driving? I've got one if you need it, and you are not too far away.

Jim

 

[leroy]

Also check vacuum line to fuel pressure regulator for cracks.

Jim

 

[Boosted]

Jim & Daenan
I have a pressure gauge but its the type that hooks to shrader valve. Not sure how I could do that and go down the road.
All vacuum lines were replaced while doing the FP. I may do the bicycle hose test shortly.

Had ignition module from dist check today....tested a dozen time until warm....passed all tests I was hoping it was the culprit.

I am thinking F pressure too. I may try loading it up in gear to see if it drops.

Jim, Perhaps I can run up there some evening and have you take a look.
PM me and let me know if thats cool and what your schedule looks like.

Daenan, I will take you up on your offer. If its not an issue I will get it back to you...
Trade you for deals on whatever parts you might need. :wink:

Thanks for the help!

 

[leroy]

Boosted,

Tonight or Tuesday night would be the only evenings I'm available until next weekend. Ted may come over next weekend, but haven't finalized plans.

Jim

 

[Boosted]

who is ted?

 

[DanenGraham]

Ted is the one with the blk/blk ty at K-State, he lives over by Jim

 

[ZMann]

Ted lives in southern kc. Jim lives in lawernce. So is it tuesday afternoon that we are coming over? Id like to hook up the wideband and start that process.

 

[Boosted]

I will be around 7:00 assuming an hour drive from KC to lawrence by the time I find my way there. Is there anything I need to bring?

 

[ZMann]

Boosted, I doubt it takes you 25 minutes to get to Jim's since you are near 70. If you need directions, PM me...

Jim, when's a good time for ya?

 

[DanenGraham]

Hell, if you are all getting together, i can bring that 2bar out to Jim's (if thats where you end up going)

I also have my old ign module, it worked fine for me (but putting a new one in wouldnt be a bad idea, unless you want to see if thats your prob without buying it first) just an idea

 

[Boosted]

That's cool with my provided we aren't overrunning Jim. I appreciate the thought. They tested my control mod numerous time until it was good and warm and it never failed any of the tests.
I will replace the ignition module anyways, but I am trying not to spend a fortune on this thing until it runs for longer than a week without massive attentions. Once it quits DEMANDING my money, I will be more than happy to throw the money at it all the time......makes sense? :wink:

 

[leroy]

Any time after noon is okay with me, if you want to come by Zach #1. lol
I've got a chip adapter for ya.

I have another job scheduled for the a.m.

You're welcome also, Danen. I have extra map sensors.

You shouldn't have to bring anything, Boosted. I'm kind of a lightweight when it comes to staying up late, so not sure how far we'll get.

Jim

 

[Boosted]

ITS ALIVE
Found the problem. The shop that welded the sump kit on was supposed to rinse it out after they welded to remove any leftover crap from the cutting and welding. Guess they didnt :evil: because the fuel filter was clogged.
As a side note, the pump was bad too, so I swapped that out yesterday over lunch and now all is well. Now I get to throw my money at it voluntarily instead of it demanding it!

Thanks for all the help!!!


Zach

 

[ZMann]

Z. Myers(sp?) Didn't i mention fuel filter the first time i was there! :lol: Happy Tuning my friend.